Revert of Support impl-side painting in Mandoline.

Revert of Support impl-side painting in Mandoline. (patchset #19 id:370001 of https://codereview.chromium.org/1181013010/)

Reason for revert:
The same compile errors also happen on the Win x64 GN bot:
http://build.chromium.org/p/chromium.win/builders/Win%20x64%20GN/builds/2869/steps/compile/logs/stdio

e:\b\build\slave\win_x64_gn\build\src\mojo\gles2\command_buffer_client_impl.cc(255) :error C2220: warning treated as error - no 'object' file generated
e:\b\build\slave\win_x64_gn\build\src\mojo\gles2\command_buffer_client_impl.cc(255) : warning C4267: '=' : conversion from 'size_t' to 'int32_t', possible loss of data
e:\b\build\slave\win_x64_gn\build\src\mojo\gles2\command_buffer_client_impl.cc(256) : warning C4267: '=' : conversion from 'size_t' to 'int32_t', possible loss of data
e:\b\build\slave\win_x64_gn\build\src\mojo\gles2\command_buffer_client_impl.cc(313) : warning C4267: 'argument' : conversion from 'size_t' to 'int', possible loss of data



Original issue's description:
> Support impl-side painting in Mandoline.
> 
> This is now the default in cc and the old code paths are being removed, so we need to use impl-side painting. The changes are:
> -add necessary thunks for the gl methods
> -expose gpu::GpuMemoryBufferManager and cc::TaskGraphRunner in ui and html_viewer
> -IPC to view_manager and call the GPU code (modelled on content)
> 
> BUG=499030
> NOPRESUBMIT=true
> 
> Committed: https://crrev.com/b14138431960bb3542e7b1b7447363ef13528e0d
> Cr-Commit-Position: refs/heads/master@{#334602}

TBR=sky@chromium.org,piman@chromium.org,danakj@chromium.org,yzshen@chromium.org,jam@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=499030

[Marijn Kruisselbrink, 2015-06-16 17:51:48]

Created Revert of Support impl-side painting in Mandoline.

[commit-bot: I haz the power, 2015-06-16 17:52:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1189833005/1

[jam, 2015-06-16 17:54:16]

The CQ bit was unchecked by jam@chromium.org

[jam, 2015-06-16 17:54:39]

looking at this now, don't revert

[commit-bot: I haz the power, 2015-06-16 17:54:41]

The CQ bit was unchecked by commit-bot@chromium.org

[mkollaro, 2015-06-18 13:26:56]

I've also noticed that the files generated by
gpu/command_buffer/build_gles2_cmd_buffer.py haven't been properly checked in.
If you run that command on the current master branch, it will create differences
in gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h